Can a Grizzl-E charger be connected to a platform other than the manufacturer's?

Yes. The Grizzl-E Smart, Grizzl-E Smart v2 (North America) models speak standard OCPP and let you change the server URL. In the charger's own web interface: it broadcasts a Wi-Fi network named after its serial number and is configured from http://192.168.4.1.

Which OCPP URL do I enter on a Grizzl-E for askacharge.com?

wss://askacharge.com/askacharge/ocpp/your-brand, where your-brand is the brand identifier on askacharge.com; the charger appends its identity. The identity must match the one registered in the panel and the password stays blank unless the charger's OCPP credential has been enabled.

Do I lose the manufacturer's app when I set OCPP on a Grizzl-E?

Some app functions move to the OCPP platform (start, cards, statistics). The hardware stays the same and you can go back by changing the URL again.

How to change the OCPP server URL on a Grizzl-E charger (Grizzl-E Smart) and connect it to another platform

A Grizzl-E charger that speaks standard OCPP can be connected to any platform by changing one setting. Here is where that setting lives on Grizzl-E Smart, Grizzl-E Smart v2 (North America), exactly what to enter, and where people usually get stuck. Written by a platform (askacharge.com), but the procedure works for any.

Where the setting lives

In the charger's own web interface: it broadcasts a Wi-Fi network named after its serial number and is configured from http://192.168.4.1.

Step by step

Connect your phone or laptop to the charger's Wi-Fi network (name = serial number; default password password).
Open http://192.168.4.1 in the browser. Enter your 2.4 GHz Wi-Fi network (not 5 GHz) and press Save and Reboot; the LED goes from magenta to blue once it has internet.
Go back in and press the ONLINE button ten times to reveal the advanced settings, then Advanced OCPP Configuration.
In Server URL enter your brand's base URL (below). In Station ID the registered identifier; the serial number is the easiest choice.
Press Apply Changes and then Save and Reboot. It shows as connected within a couple of minutes.

What to enter to connect it to askacharge.com

OCPP server URL	`wss://askacharge.com/askacharge/ocpp/your-brand` — your-brand is your brand's identifier on askacharge.com (shown under Chargers → Add, with the full URL ready to copy). The charger appends its own identity; if your unit only has a URL field and no identity field, enter the full URL: `…/ocpp/your-brand/identity`.
Charge point identity	The same one you register in the panel when adding the charger. Case-sensitive. With Grizzl-E, the serial number is the easiest choice.
Password	Blank by default. If you enable the charger's OCPP credential in the panel (recommended for units exposed to the internet), the username is the identity and the password is the one the panel generates: OCPP Security Profile 2.
Protocol	OCPP 1.6J (JSON) or OCPP 2.0.1. Subprotocol `ocpp1.6` / `ocpp2.0.1`.
Before connecting	The charger must be registered in the brand with that identity; otherwise the server rejects the connection. Register under Chargers → Add.

Where it usually fails

2.4 GHz Wi-Fi only, with at least −67 dBm of signal; weaker than that it drops intermittently and looks like a platform fault.
On v2 units and recent firmware the way into the OCPP settings has changed more than once; if you cannot see the button, update the firmware from the same web page.
It is a North American charger (NEMA 14-50 / 6-50, 240 V): this guide applies to the US and Canada.

If your brand isn't here

The procedure is always the same; what changes is where the setting lives: look in the manufacturer's app, in the charger's web interface (by its IP) or in the installer software for a section called OCPP, Back office, Central System or Server. You need to be able to enter the URL and, nearly always, the identity. If the field is locked or missing, the manufacturer has tied the charger to its own platform: read what to do when the manufacturer locks or switches off its server.

Other brands

WallboxPulsar Plus, Pulsar Max, Pulsar Pro, Commander 2, Copper SB AlfenEve Single S-line, Eve Single Pro-line, Eve Double Pro-line, Twin AutelMaxiCharger AC Lite, AC Wallbox, AC Elite, AC Ultra V2CTrydan, Trydan Pro CircontroleNext Elite, eNext Park, Raption, Wallbox eHome (with communications module)

How to change the OCPP server URL on a Grizzl-E charger